作为该诊断系统的一个应用实例，模拟了旋转主轴的故障诊断试验。
As a application case of this diagnostic system, the fault diagnosis experiment of the rotating axis is simulated.
大量故障诊断的计算机模拟和在故障模型仿真线上的模拟故障诊断试验表明，方法有效。
A lot of the simulation of the fault diagnosis by computer and the tests on the fault model simulation lines demonstrate that the method presented in the paper is effective.
第三步，确定故障。最后做了一个滚动轴承故障诊断试验，结果验证了该方法的有效性。
Then, a fault diagnosis experiment of rolling bearings is given and the result shows the effectiveness of this method.
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